Strontium

Strontium is a metallic chemical element with the symbol Sr and atomic number 38, belonging to the alkaline earth metals group. This soft, silver-white metal has a molecular weight of 87.62 g/mol and exhibits high reactivity with air and water. Strontium occurs naturally in celestite and strontianite minerals and shares similar properties with calcium and barium, making it valuable in various industrial applications.

Strontium is a soft, silvery-white metal that readily oxidizes in air, forming a yellowish oxide layer. It has a melting point of 777°C and a boiling point of 1382°C, with a density of 2.64 g/cm³. The metal reacts vigorously with water, producing strontium hydroxide and hydrogen gas. It is highly reactive and must be stored under mineral oil or inert atmosphere to prevent oxidation.

Strontium is primarily used in pyrotechnics and fireworks to produce brilliant red flames and colors. Industrial applications include manufacturing ferrite magnets, refining zinc, and producing specialty glass for television tubes. It serves as an alloying agent in aluminum and copper alloys, and strontium compounds are used in signal flares, tracer bullets, and as additives in certain pharmaceutical applications.

Strontium requires careful handling due to its high reactivity and pyrophoric nature when finely divided. Use appropriate personal protective equipment including safety goggles, protective gloves, and lab coats. Work in well-ventilated areas or under inert atmosphere to prevent oxidation. Avoid contact with water, acids, and oxidizing agents. Keep away from heat sources and flames, as the metal can ignite spontaneously in air when finely powdered.

Strontium must be stored under mineral oil or in an inert atmosphere to prevent oxidation and reaction with moisture. Use tightly sealed containers made of compatible materials and store in cool, dry areas away from incompatible substances like acids, oxidizers, and water. The storage area should be well-ventilated and protected from heat sources. Regular inspection of storage conditions is essential to maintain product integrity.

Strontium contact requires immediate first aid measures depending on exposure route. For skin contact, remove contaminated clothing and flush with plenty of water for at least 15 minutes. In case of eye contact, rinse thoroughly with water and seek medical attention. If inhaled, move to fresh air immediately. For ingestion, do not induce vomiting and seek immediate medical care. Always consult safety data sheets for specific guidance.

Strontium disposal must comply with local and national hazardous waste regulations due to its reactive nature. Small quantities can be carefully neutralized by controlled reaction with water under professional supervision, forming less hazardous strontium hydroxide. Larger quantities require disposal through licensed hazardous waste contractors. Never dispose of metallic strontium in regular waste streams or pour down drains due to fire and explosion risks.

Strontium is classified under ADR Class 4.2 (substances liable to spontaneous combustion), Packing Group I, indicating high danger level. Transportation requires specialized packaging meeting UN specifications, proper labeling with Class 4.2 hazard labels, and appropriate shipping documentation. Only qualified carriers experienced in handling pyrophoric materials should transport strontium, following strict ADR regulations for dangerous goods transportation throughout Europe.

Strontium is regulated under various European frameworks including REACH registration requirements for commercial use. While not classified as SVHC (Substance of Very High Concern), it falls under CLP regulation for hazard communication. Transportation is strictly regulated under ADR as Class 4.2 dangerous goods. Industrial users must comply with workplace safety regulations and may require specific permits for handling and storage of this reactive metal.

Strontium is available through specialized chemical distributors across Europe, with OYSI being a reliable European supplier offering technical-grade strontium for industrial applications. Professional buyers should ensure suppliers provide proper documentation, safety data sheets, and comply with transportation regulations. Due to its reactive nature and ADR classification, purchase requires verification of proper handling capabilities and regulatory compliance from qualified chemical distributors.